Update 4/12 4:58 pm PT: PlayStation Network is back up according to the official Network Status page.
PlayStation’s official PSN Status page is now listing all online services as up and running.
According to the official PlayStation Network status tracker, all services, from Account Management, online gaming, PlayStation Now, and the PSN Store are experiencing issues.
Reports from PlayStation owners online as well as the PlayStation status page indicate that PSN is currently experiencing some technical difficulties.